Jesse Rath has been upgraded to series regular for Supergirl Season 4.
Preview clip for the Supergirl episode "Legion of Super-Heroes"
Preview images for the Supergirl episode "Legion of Super-Heroes"
The CW has revealed a new trailer for the "Legion of Super-Heroes" episode of Supergirl, revealing Jesse Rath as Brainiac 5
Brainiac 5 and the Legion of Super-Heroes are coming to Supergirl!